skia2/docs/examples/Region_Iterator_rewind.cpp
Hal Canary d88c2e8e09 Docs: rename examples files to match names
Change-Id: I9a6b2780cfdd91cdd16d5a08eb9ba1214492cb7e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201982
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2019-03-19 18:49:22 +00:00

26 lines
997 B
C++

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "fiddle/examples.h"
// HASH=32d51e959d6cc720a74ec4822511e2cd
REG_FIDDLE(Region_Iterator_rewind, 256, 256, true, 0) {
void draw(SkCanvas* canvas) {
auto debugster = [](const char* label, SkRegion::Iterator& iter, bool addRewind) -> void {
if (addRewind) {
bool success = iter.rewind();
SkDebugf("%14s rewind success=%s\n", label, success ? "true" : "false");
}
auto r = iter.rect();
SkDebugf("%14s rect={%d,%d,%d,%d}\n", label, r.fLeft, r.fTop, r.fRight, r.fBottom);
};
SkRegion::Iterator iter;
debugster("empty iter", iter, true);
SkRegion region;
iter.reset(region);
debugster("empty region", iter, true);
region.setRect({1, 2, 3, 4});
iter.reset(region);
debugster("after set rect", iter, false);
debugster("after rewind", iter, true);
}
} // END FIDDLE